Improvement in earth-augers



3 Sheets-Sheet 1'.

'0. MARTIN. EARTH-AUGER.

Patented July 18,1876.

N-FETERS, PNOTO-UTHDGRAPMZR, WASHINGTON. C.

3 Sheets-Sheet Z O. MARTIN. EARTH-AUGER. I N-o.180,046, Patented Ju 1y18,1876.

UNITED STATES PATENT O FICE.

ORIN MARTIN, OF BLOOMFIELD, IOWA.

IMPROVEMENT IN EART-H-AUGERS.

Specification forming part of Letters Patent No. 180,046, dated July 18, 1876; application filed June 19, 1876. v

To all whom it may concern:

Be it known that I, ()RIN MARTIN, of Bloomfield, Iowa, have invented certain new and useful Improvements in Well-Angers, of

which the following is a full, clear, and exact 4 shows details of the upper gearing. Fig. 5

shows details of the boring-bucket.

My invention relates to that class of wellangers used in sinking wells where the earth has to be removed by means of alternately lowering and raising a bucket; and it consists in the several combinations ofdeviceshereinafter explained and claimed.

To enableothers skilled in the art to make and use my invention, I will proceed to describe the exact manner in which'I- have carried it out.

In the drawings, A A represent a derrickframe, over and around which moves the sweep B, secured at its upper end to a loose sleeve, b. This sleeve is bisected by a zigzag line as shown in Figs. 1 and 2, the lower portion 11 being secured, to the cog-wheel O, which gears with and drives the pinion E, thus revolving the drum F. The rectangular frame Gr, having its ends a a passing through slots in the upper portion of the derrick-frame, is secured to thesleeve b by means of the loose collar 6, held between the shoulders e e. The sleeve b revolves upon a hollow stem, S, secured to the derrick by means of the plate S. Above the sleeve b is secured the eollarf, as shown in Figs. 3 and 4. This collar has a rectangular opening fitting upon .the shaft H, and is slotted upon its periphery to receive the point of the sliding rod J, by which means the collarf may become geared with the sleeve b and revolve with it, thus causing the shaft to revolve, and with it the bit I and boring-bucket K.

When the frame G is raised by means of a suitable lever, or otherwise, the collar eraises sition by the pawl m, catching in the ratchetwheel in on the lower extremity of the drum.

The bucket is raised by means of the rope or chain N passing from the derrick through the sheaves l 2, and around the drum F, as shownin Fig. 2.

The bucket K has two boring-lips, k k, at-

tached to its bottom, and a cutting-lip, l, at its top for the purpose of widening the opening in the track of the bucket. The earth removed by each cutting-lip will be automatically con- 1 veyed to the bucket to be removed.

The bucket is provided with hinged doors or openings 0 0 in its bottom, which are held closed by means of the hinged straps p p,

which pass up the sides over the top edge of the bucket, where they are secured by means of the pins 19 p. c

When it is desired to dump the earth from the bucket these pins are withdrawn, and the doors 0 0 open and allow the earth to drop. out.

Vertically through the center of the boringbucket is the air-tube or short hollowcyliuder R, sliding over the shaft H when the bucket is raised or lowered, and to this cyl: inder is secured the cutting-lip l by means of the cross-arm Z. The cylinder R is provided with two shoulders, r 1", between which is fitted the collar 1', to which is attached sheave 1.

I am aware that the raising mechanism is old, and therefore do not claim it.

Having thus described my invention, what I claim as new, and. desire to secure by Let ters Patent, is

'1. The bucket K, provided with the lips k k and l, in combination with the air-tube R, provided with the shoulders 1* 1', collar r,

shaft H, and sheave 2, substantially as and sleeve 1) collar f, red I, and sweep B, all eonstructed to operate substantially in the manfor the purpose set forth.

2. Thebueket- K, provided with the boringner and for the purpose specified. lips k k and cutting-lip I, and having the ORIN MARTIN.

Witnesses i H. H. SMITH, Amos STEOKEL.

hinged doors 0 0 secured by the straps p 1) and pins 1) p, and the spring-pawl g, in com bination with" the notched shaft H, bisected 

